package com.echoesnet.echoesshortvideo.Utils;

import android.content.Context;
import android.content.SharedPreferences;

import com.echoesnet.echoesshortvideo.AppController;

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.List;
import java.util.Map;
import java.util.Set;

/**
 * Created by wangben on 2015/5/23.
 */
public class SharePreUtils
{
    private SharePreUtils()
    {
    }

    /**
     * 保存在手机里面的文件名
     */
    public static final String FILE_NAME = "echoes_short_video";

    /**
     * 保存数据的方法，我们需要拿到保存数据的具体类型，然后根据类型调用不同的保存方法
     *
     * @param key
     * @param object
     */
    private static void put(String key, Object object)
    {
        Context context = AppController.getInstance();
        SharedPreferences sp = context.getSharedPreferences(FILE_NAME, Context.MODE_PRIVATE);
        SharedPreferences.Editor editor = sp.edit();

        if (object instanceof String)
        {
            editor.putString(key, (String) object);
        }
        else if (object instanceof Integer)
        {
            editor.putInt(key, (Integer) object);
        }
        else if (object instanceof Boolean)
        {
            editor.putBoolean(key, (Boolean) object);
        }
        else if (object instanceof Float)
        {
            editor.putFloat(key, (Float) object);
        }
        else if (object instanceof Long)
        {
            editor.putLong(key, (Long) object);
        }
        else
        {
            editor.putString(key, object.toString());
        }
        SharedPreferencesCompat.apply(editor);
    }

    /**
     * 得到保存数据的方法，我们根据默认值得到保存的数据的具体类型，然后调用相对于的方法获取值
     *
     * @param key
     * @param defaultObject
     * @return
     */
    private static Object get(String key, Object defaultObject)
    {
        Context context = AppController.getInstance();
        SharedPreferences sp = context.getSharedPreferences(FILE_NAME,
                Context.MODE_PRIVATE);

        if (defaultObject instanceof String)
        {
            return sp.getString(key, (String) defaultObject);
        }
        else if (defaultObject instanceof Integer)
        {
            return sp.getInt(key, (Integer) defaultObject);
        }
        else if (defaultObject instanceof Boolean)
        {
            return sp.getBoolean(key, (Boolean) defaultObject);
        }
        else if (defaultObject instanceof Float)
        {
            return sp.getFloat(key, (Float) defaultObject);
        }
        else if (defaultObject instanceof Long)
        {
            return sp.getLong(key, (Long) defaultObject);
        }
        return null;
    }

    private static void putSet(String key, Set<String> set)
    {
        Context context = AppController.getInstance();
        SharedPreferences sp = context.getSharedPreferences(FILE_NAME, Context.MODE_PRIVATE);
        SharedPreferences.Editor editor = sp.edit();
        editor.putStringSet(key, set);
        SharedPreferencesCompat.apply(editor);
    }

    private static Set<String> getSet(String key, Set<String> defaultSet)
    {
        Context context = AppController.getInstance();
        SharedPreferences sp = context.getSharedPreferences(FILE_NAME,
                Context.MODE_PRIVATE);
        return sp.getStringSet(key, defaultSet);
    }

    /**
     * 移除某个key值以及对应的值
     *
     * @param context
     * @param key
     */
    public static void remove(Context context, String key)
    {
        SharedPreferences sp = context.getSharedPreferences(FILE_NAME,
                Context.MODE_PRIVATE);
        SharedPreferences.Editor editor = sp.edit();
        editor.remove(key);
        SharedPreferencesCompat.apply(editor);
    }

    /**
     * 除了特定的数据清除其他数据
     *
     * @param context
     * @param keys
     */
    public static void removeValueExcludeSome(Context context, List<String> keys)
    {
        SharedPreferences sp = context.getSharedPreferences(FILE_NAME,
                Context.MODE_PRIVATE);
        SharedPreferences.Editor editor = sp.edit();
        Map<String, ?> allKeyValues = getAll(context);
        for (String key : allKeyValues.keySet())
        {
            if (!keys.contains(key))
            {
                editor.remove(key);
                SharedPreferencesCompat.apply(editor);
            }
        }
    }

    /**
     * 清除所有数据
     *
     * @param context
     */
    public static void clear(Context context)
    {
        SharedPreferences sp = context.getSharedPreferences(FILE_NAME,
                Context.MODE_PRIVATE);
        SharedPreferences.Editor editor = sp.edit();
        editor.clear();
        SharedPreferencesCompat.apply(editor);
    }

    /**
     * 查询某个key是否已经存在
     *
     * @param context
     * @param key
     * @return
     */
    public static boolean contains(Context context, String key)
    {
        SharedPreferences sp = context.getSharedPreferences(FILE_NAME,
                Context.MODE_PRIVATE);
        return sp.contains(key);
    }

    /**
     * 返回所有的键值对
     *
     * @param context
     * @return
     */
    public static Map<String, ?> getAll(Context context)
    {
        SharedPreferences sp = context.getSharedPreferences(FILE_NAME,
                Context.MODE_PRIVATE);
        return sp.getAll();
    }

    /**
     * 创建一个解决SharedPreferencesCompat.apply方法的一个兼容类
     *
     * @author zhy
     */
    private static class SharedPreferencesCompat
    {
        private static final Method sApplyMethod = findApplyMethod();

        /**
         * 反射查找apply的方法
         *
         * @return
         */
        @SuppressWarnings({"unchecked", "rawtypes"})
        private static Method findApplyMethod()
        {
            try
            {
                Class clz = SharedPreferences.Editor.class;
                return clz.getMethod("apply");
            } catch (NoSuchMethodException e)
            {
            }
            return null;
        }

        /**
         * 如果找到则使用apply执行，否则使用commit
         *
         * @param editor
         */
        public static void apply(SharedPreferences.Editor editor)
        {
            try
            {
                if (sApplyMethod != null)
                {
                    sApplyMethod.invoke(editor);
                    return;
                }
            } catch (IllegalArgumentException e)
            {
            } catch (IllegalAccessException e)
            {
            } catch (InvocationTargetException e)
            {
            }
            editor.commit();
        }
    }


    public static void setToken(String token)
    {
        put("token", token);
    }

    public static String getToken()
    {
        return (String) get("token", "");
    }


    public static void setUId(String uId)
    {
        put("uId", uId);
    }

    public static String getUId()
    {
        return (String) get("uId", "");
    }

    //当前用户头像url
    public static void setHeadImg(String headImgUrl)
    {
        put("headImgUrl", headImgUrl);
    }

    public static String getHeadImg()
    {
        return (String) get("headImgUrl", "");
    }


}

